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3 years ago

Help please I’m trying to go to sleep

Mathematics

1 answer:

Varvara68 [4.7K]3 years ago

6 0

Answer: y > -4 (red)

Step-by-step explanation:

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Two planes left an airport at noon. One flew east at a certain speed and the other flew west at twice the speed. The planes were

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The plane flying west was flying at 600 miles per hour and the plane flying east was flying 300 miles per hour

7 0

3 years ago

A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an

liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

when the angle is 30 degrees

$tan(30) = \frac{6000}{d1}$

$d1 = \frac{6000}{tan(30)}$

$d1 = \frac{6000}{0.577}$

d1 = 10392.3 meters

when the angle is 60 degrees

$tan(60) = \frac{6000}{d2}$

$d2 = \frac{6000}{tan(60)}$

$d2 = \frac{6000}{1.732}\\$

d2 = 3464.1 meters

distance travelled by aircraft in 1 min is

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

Now converting to m/sec

=> $\frac{6928.2}{60}$

=>115.47 m/sec

4 0

3 years ago

57.

barxatty [35]

Answer:

$5.70

Step-by-step explanation:

→ Find the total amount they needed to pay

11.40 × 2 = 22.80

→ Divide the total by 4

22.80 ÷ 4 = $5.70

6 0

3 years ago

Which expression is equivalent to y x 48?

Nostrana [21]

Answer: (y*40)+(y*8)

Step-by-step explanation:

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2 years ago

Which is the graph of the step function f(x)? f(x) = StartLayout Enlarged left-brace 1st row 1st column negative 1 2nd column x

Andrews [41]

Answer:

its B

Step-by-step explanation: just took test

5 0

3 years ago